PIC18F2221 MICROCHIP [Microchip Technology], PIC18F2221 Datasheet - Page 351

• Manufacturer Part Number: PIC18F2221
• Description: 28/40/44-Pin Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
• Manufacturer: MICROCHIP [Microchip Technology]

FIGURE 26-7:
TABLE 26-9:
© 2007 Microchip Technology Inc.
10
11
12
13
14
15
16
17
18
18A
19
20
20A
21
21A
22†
23†
Note 1:
Param
No.
Note:
(Output)
I/O pin
I/O pin
(Input)
OSC1
CLKO
† These parameters are asynchronous events not related to any internal clock edges.
TosH2ckL OSC1 ↑ to CLKO ↓
TosH2ckH OSC1 ↑ to CLKO ↑
TckR
TckF
TckL2ioV
TioV2ckH Port In Valid before CLKO ↑
TckH2ioI
TosH2ioV OSC1 ↑ (Q1 cycle) to Port Out Valid
TosH2ioI
TioV2osH Port Input Valid to OSC1 ↑ (I/O in setup time)
TioR
TioF
T
T
Symbol
INP
RBP
Measurements are taken in RC mode, where CLKO output is 4 x T
Refer to Figure 26-5 for load conditions.
CLKO AND I/O TIMING REQUIREMENTS
CLKO Rise Time
CLKO Fall Time
CLKO ↓ to Port Out Valid
Port In Hold after CLKO ↑
OSC1 ↑ (Q2 cycle) to
Port Input Invalid
(I/O in hold time)
Port Output Rise Time
Port Output Fall Time
INT pin High or Low Time
RB7:RB4 Change INT High or Low Time
Old Value
CLKO AND I/O TIMING
Q4
Characteristic
10
13
17
PIC18LFXXXX
PIC18FXXXX
PIC18LFXXXX
PIC18FXXXX
PIC18LFXXXX
PIC18FXXXX
14
20, 21
Q1
Preliminary
19
0.25 T
PIC18F4321 FAMILY
18
Min
100
200
T
T
—
—
—
—
—
—
—
—
—
—
CY
CY
CY
0
0
+ 25
Q2
15
OSC
Typ
75
75
35
35
50
10
10
—
—
—
—
—
—
—
—
—
—
.
0.5 T
Max
200
200
100
100
150
CY
25
60
25
60
—
—
—
—
—
—
—
11
12
+ 20
New Value
DS39689E-page 349
16
Units Conditions
Q3
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
V
V
V
DD
DD
DD
(Note 1)
(Note 1)
(Note 1)
(Note 1)
(Note 1)
(Note 1)
(Note 1)
= 2.0V
= 2.0V
= 2.0V